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    • 1. 发明申请
    • Diesel fuel dilution level determination of diesel engine oil
    • 柴油机柴油稀释量测定柴油机油
    • US20070006642A1
    • 2007-01-11
    • US11175059
    • 2005-07-05
    • Yingjie LinJoseph HeremansSu-Chee Wang
    • Yingjie LinJoseph HeremansSu-Chee Wang
    • G01M15/09
    • G01N33/2888G01N33/2835
    • A method for determining fuel dilution of diesel engine lubricating oil in a diesel engine. A first table contains a soot compensation factor, respectively, for each weight of oil selected among a predetermined range of oil weights. A second table contains fuel dilution levels for a plurality of predetermined compensated viscosity ratios. After determining the weight of the oil in the engine a first viscosity of the oil at a first temperature and a second viscosity of the oil at a second temperature are measured. Next, either a ratio or a difference of the first and second viscosities is determined. Using the ratio, soot in the oil is compensated using a soot compensation factor of the first table which is respective of the oil to thereby provide a compensated viscosity ratio. Finally, the compensated viscosity ratio is compared with the second table to thereby determine the fuel dilution level.
    • 一种用于确定柴油发动机中的柴油机润滑油的燃料稀释的方法。 对于在预定范围的油重量中选择的每种重量的油,第一表分别包含煤烟补偿因子。 第二表包含多个预定补偿粘度比的燃料稀释水平。 在确定发动机中的油的重量之后,测量在第一温度下的油的第一粘度和第二温度下的油的第二粘度。 接下来,确定第一和第二粘度的比率或差。 使用该比例,使用相应于油的第一工作台的烟灰补偿因子来补偿油中的烟灰,从而提供补偿粘度比。 最后,将补偿粘度比与第二表进行比较,由此确定燃料稀释水平。
    • 2. 发明申请
    • Method for determining engine lubricating oil condition
    • 确定发动机润滑油状况的方法
    • US20050056083A1
    • 2005-03-17
    • US10976044
    • 2004-10-28
    • Joseph HeremansSu-Chee Wang
    • Joseph HeremansSu-Chee Wang
    • G01N33/28G01N33/26
    • G01N33/2888
    • Activation energy, W, is determined from oil conductivity measurements to thereby provide engine oil condition from a known relationship between viscosity and W. Changes of W at a given temperature as the oil ages are reflective of changes in viscosity of the oil at the same given temperature, wherein changes in W at different temperatures are reflective of changes of viscosity at those respective temperatures as the oil ages. To determine viscosity, the temperature dependence of the oil's conductivity is measured to deduce the value of W at a given temperature. W is monitored as the oil ages. W may also be determined through the ratio of the oil conductivities at two different temperatures by techniques well known in the art by which the viscosity may be determined as the oil ages.
    • 激活能量W由油电导率测量确定,从而从粘度与W之间的已知关系提供发动机机油条件。在给定温度下,随着油年龄的变化,W反映在同一给定的油中的粘度变化 温度,其中在不同温度下W的变化反映随着石油老化在这些各自温度下的粘度变化。 为了确定粘度,测量油的导电性的温度依赖性以推导出在给定温度下的W值。 W被监测为油龄。 W也可以通过本领域熟知的技术在两个不同温度下的油电导率的比例来确定,通过该比例可以将粘度确定为油龄。